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Finding the Fourth Proportional to 136,656.80, 204,985.20 and 118,224.80

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Solution

The fourth proportional to 136,656.80, 204,985.20 and 118,224.80 is: 177,337.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,656.80 : 204,985.20 = 118,224.80 : x
  2. Step 2: Convert to fraction form
    136,656.80/204,985.20 = 118,224.80/x
  3. Step 3: Cross multiply
    136,656.80x = 204,985.20 × 118,224.80
  4. Step 4: Simplify right side
    136,656.80x = 24,234,334,272.96
  5. Step 5: Solve for x
    x = 24,234,334,272.96/136,656.80
  6. Step 6: Final answer
    x = 177,337.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.